Most sports bikes are <500lbs wet. I've seen a car hauling a 250lb dirt bike on a single rack without issues. I imagine you can get a class III or Class IV hitch attached descretely like this guy in the link below, to avoid the entire trailer situation.:

Haven't been on here in forever. Took the car to the track this past weekend, best pass was 10.63@128. Track prep wasn't ideal and I was on my street wheels. (I run NTO5Rs now since it sits in the garage all year)